Qualcomm Technologies, Inc. SMB138X Charger Specific Bindings

SMB138X Charger is an efficient programmable battery charger capable of charging
a high-capacity lithium-ion battery over micro-USB or USB Type-C ultrafast with
Quick Charge 2.0, Quick Charge 3.0 support. Wireless charging features full
A4WP Rezence 1.2, WPC 1.2, and PMA support.

=======================
Required Node Structure
=======================

SMB138X Charger must be described in two levels of devices nodes.

==================================
First Level Node - SMB138X Charger
==================================

Charger specific properties:
- compatible
  Usage:      required
  Value type: <string>
  Definition: String which indicates the charging mode. Can be one of the
	      following:
              Standalone/Parallel Master	- "qcom,smb138x-charger"
	      Parallel Slave			- "qcom,smb138x-parallel-slave"

- qcom,pmic-revid
  Usage:      required
  Value type: phandle
  Definition: Should specify the phandle of SMB's
	revid module. This is used to identify
	the SMB subtype.

- qcom,parallel-mode
  Usage:      optional
  Value type: <u32>
  Definition: Specifies parallel charging mode. If not specified, MID-MID
	      option is selected by default.

- qcom,suspend-input
  Usage:      optional
  Value type: <empty>
  Definition: Boolean flag which indicates that the charger should not draw
	      current from any of its input sources (USB, DC).

- qcom,use-extcon
  Usage:      optional
  Value type: <empty>
  Definition: Boolean flag which specify that smb138x will act as main charger
	      to do extcon USB calls. If not defined, other charger driver can
	      act as main charger to do extcon USB calls.

- qcom,fcc-max-ua
  Usage:      optional
  Value type: <u32>
  Definition: Specifies the maximum fast charge current in micro-amps.

- qcom,usb-icl-ua
  Usage:      optional
  Value type: <u32>
  Definition: Specifies the USB input current limit in micro-amps.

- qcom,dc-icl-ua
  Usage:      optional
  Value type: <u32>
  Definition: Specifies the DC input current limit in micro-amps.

- qcom,charger-temp-max-mdegc
  Usage:      optional
  Value type: <u32>
  Definition: Specifies the maximum charger temperature in milli-degrees
	      Celsius. If unspecified a default of 80000 will be used.

- qcom,connector-temp-max-mdegc
  Usage:      optional
  Value type: <u32>
  Definition: Specifies the maximum connector temperature in milli-degrees
	      Celsius. If unspecified a default value of 105000 will be used.

- io-channels
  Usage:      optional
  Value type: List of <phandle u32>
  Definition: List of phandle and IIO specifier pairs, one pair
		for each IIO input to the device. Note: if the
		IIO provider specifies '0' for #io-channel-cells,
		then only the phandle portion of the pair will appear.

- io-channel-names
  Usage:      optional
  Value type: List of <string>
  Definition: List of IIO input name strings sorted in the same
		order as the io-channels property. Consumer drivers
		will use io-channel-names to match IIO input names
		with IIO specifiers.

================================================
Second Level Nodes - SMB138X Charger Peripherals
================================================

Peripheral specific properties:
- reg
  Usage:      required
  Value type: <prop-encoded-array>
  Definition: Address and size of the peripheral's register block.

- interrupts
  Usage:      required
  Value type: <prop-encoded-array>
  Definition: Peripheral interrupt specifier.

- interrupt-names
  Usage:      required
  Value type: <stringlist>
  Definition: Interrupt names.  This list must match up 1-to-1 with the
	      interrupts specified in the 'interrupts' property.

=======================================
Second Level Nodes - SMB138X Regulators
=======================================

The following regulator nodes are supported:
"qcom,smb138x-vbus"	- Regulator for enabling VBUS
"qcom,smb138x-vconn"	- Regulator for enabling VCONN

- regulator-name
  Usage:      required
  Value type: <string>
  Definition: Specifies the name for this regulator.

=======
Example
=======

smb138x_charger: qcom,smb138x-charger {
	compatible = "qcom,qpnp-smb138x-charger";
	#address-cells = <1>;
	#size-cells = <1>;

	qcom,suspend-input;
	dpdm-supply = <&qusb_phy0>;

	qcom,chgr@1000 {
		reg = <0x1000 0x100>;
		interrupts =    <0x10 0x0 IRQ_TYPE_EDGE_BOTH>,
				<0x10 0x1 IRQ_TYPE_EDGE_BOTH>,
				<0x10 0x2 IRQ_TYPE_EDGE_BOTH>,
				<0x10 0x3 IRQ_TYPE_EDGE_BOTH>,
				<0x10 0x4 IRQ_TYPE_EDGE_BOTH>;

		interrupt-names =       "chg-error",
					"chg-state-change",
					"step-chg-state-change",
					"step-chg-soc-update-fail",
					"step-chg-soc-update-request";
	};

	qcom,otg@1100 {
		reg = <0x1100 0x100>;
		interrupts =    <0x11 0x0 IRQ_TYPE_EDGE_BOTH>,
				<0x11 0x1 IRQ_TYPE_EDGE_BOTH>,
				<0x11 0x2 IRQ_TYPE_EDGE_BOTH>,
				<0x11 0x3 IRQ_TYPE_EDGE_BOTH>;

		interrupt-names =       "otg-fail",
					"otg-overcurrent",
					"otg-oc-dis-sw-sts",
					"testmode-change-detect";
	};

	qcom,bat-if@1200 {
		reg = <0x1200 0x100>;
		interrupts =    <0x12 0x0 IRQ_TYPE_EDGE_BOTH>,
				<0x12 0x1 IRQ_TYPE_EDGE_BOTH>,
				<0x12 0x2 IRQ_TYPE_EDGE_BOTH>,
				<0x12 0x3 IRQ_TYPE_EDGE_BOTH>,
				<0x12 0x4 IRQ_TYPE_EDGE_BOTH>,
				<0x12 0x5 IRQ_TYPE_EDGE_BOTH>;

		interrupt-names =       "bat-temp",
					"bat-ocp",
					"bat-ov",
					"bat-low",
					"bat-therm-or-id-missing",
					"bat-terminal-missing";
	};

	qcom,usb-chgpth@1300 {
		reg = <0x1300 0x100>;
		interrupts =    <0x13 0x0 IRQ_TYPE_EDGE_BOTH>,
				<0x13 0x1 IRQ_TYPE_EDGE_BOTH>,
				<0x13 0x2 IRQ_TYPE_EDGE_BOTH>,
				<0x13 0x3 IRQ_TYPE_EDGE_BOTH>,
				<0x13 0x4 IRQ_TYPE_EDGE_BOTH>,
				<0x13 0x5 IRQ_TYPE_EDGE_BOTH>,
				<0x13 0x6 IRQ_TYPE_EDGE_BOTH>,
				<0x13 0x7 IRQ_TYPE_EDGE_BOTH>;

		interrupt-names =       "usbin-collapse",
					"usbin-lt-3p6v",
					"usbin-uv",
					"usbin-ov",
					"usbin-plugin",
					"usbin-src-change",
					"usbin-icl-change",
					"type-c-change";
	};

	qcom,dc-chgpth@1400 {
		reg = <0x1400 0x100>;
		interrupts =    <0x14 0x0 IRQ_TYPE_EDGE_BOTH>,
				<0x14 0x1 IRQ_TYPE_EDGE_BOTH>,
				<0x14 0x2 IRQ_TYPE_EDGE_BOTH>,
				<0x14 0x3 IRQ_TYPE_EDGE_BOTH>,
				<0x14 0x4 IRQ_TYPE_EDGE_BOTH>,
				<0x14 0x5 IRQ_TYPE_EDGE_BOTH>,
				<0x14 0x6 IRQ_TYPE_EDGE_BOTH>;

		interrupt-names =       "dcin-collapse",
					"dcin-lt-3p6v",
					"dcin-uv",
					"dcin-ov",
					"dcin-plugin",
					"div2-en-dg",
					"dcin-icl-change";
	};

	qcom,chgr-misc@1600 {
		reg = <0x1600 0x100>;
		interrupts =    <0x16 0x0 IRQ_TYPE_EDGE_BOTH>,
				<0x16 0x1 IRQ_TYPE_EDGE_BOTH>,
				<0x16 0x2 IRQ_TYPE_EDGE_BOTH>,
				<0x16 0x3 IRQ_TYPE_EDGE_BOTH>,
				<0x16 0x4 IRQ_TYPE_EDGE_BOTH>,
				<0x16 0x5 IRQ_TYPE_EDGE_BOTH>,
				<0x16 0x6 IRQ_TYPE_EDGE_BOTH>,
				<0x16 0x7 IRQ_TYPE_EDGE_BOTH>;

		interrupt-names =       "wdog-snarl",
					"wdog-bark",
					"aicl-fail",
					"aicl-done",
					"high-duty-cycle",
					"input-current-limiting",
					"temperature-change",
					"switcher-power-ok";
	};
};
